knocking from valve cover - TriStateTuners.com :: Home of Tristate Auto Enthusiast

180sxDrifter · 06-05-2008, 12:33 PM

My SR has a knocking noise that comes and goes from the valve cover. It will start up fine, the knocking sound will come and go from my head. Any ideas on what it might be? I'm trying to figure out how to upload the video off my phone to my comp so I can post it up.

cburwell · 06-05-2008, 12:43 PM

A few things to check:

- Oil level: I know it sounds basic, but I saw a case where the guy swore up and down the oil level was fine. Once he finally checked it again, he found it was very low.
- Pull the valve cover: Check for excess slack in the timing chain as well as anything that is loose or broken in the valve train.

180sxDrifter · 06-05-2008, 06:08 PM

I'll double check when I get home, but thier is no slack in the chain and the rest of the head looks fine.. its wierd haha

teh DIRT · 06-05-2008, 06:09 PM

stuck lifter, excessive lifter clearance etc.

omgjacki · 06-05-2008, 06:15 PM

Didn't I hear somewhere that SRs have a knock? I thought someone else said it was pretty common. I'm gonna check.

180sxDrifter · 06-05-2008, 07:51 PM

I thought the same, but so far nothing has come up in my search's.... I'll check zilvia when I get off work. I'm hopeing its something in the head, I don't feel like pulling the motor

Renegade_ · 06-05-2008, 08:07 PM

SRs are a tad noisy but they aren't more noisy than subarus at idle... When mine starts up there really isn't any ticking per se but there is injector noise and just general engine racket. Put up a video...

cburwell · 06-05-2008, 08:15 PM

Quote:

Originally Posted by omgjacki

Didn't I hear somewhere that SRs have a knock? I thought someone else said it was pretty common. I'm gonna check.

They are known for timing chain rattle on startup. At least as they get older and the tensioner wears out.

06-05-2008, 12:33 PM	#1
180sxDrifter Tri-State Post Whore Join Date: Jun 2005 Location: ドリフト天国 Member #585 My Ride: 06 STI, S13 Silvia, Ruckus iTrader: (3)	knocking from valve cover My SR has a knocking noise that comes and goes from the valve cover. It will start up fine, the knocking sound will come and go from my head. Any ideas on what it might be? I'm trying to figure out how to upload the video off my phone to my comp so I can post it up. __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. 06 Sti-Built motor....stock turbo 89 S13-aero, Silvia front coupe blah blah blah

06-05-2008, 12:43 PM	#2
cburwell Tri-State Post Whore Join Date: Apr 2005 Member #303 iTrader: (0)	A few things to check: - Oil level: I know it sounds basic, but I saw a case where the guy swore up and down the oil level was fine. Once he finally checked it again, he found it was very low. - Pull the valve cover: Check for excess slack in the timing chain as well as anything that is loose or broken in the valve train. __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. - To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. "The Corvette took nearly 25 years to sell 500,000 units; the Z does it in fewer than 10."

06-05-2008, 06:08 PM	#3
180sxDrifter Tri-State Post Whore Join Date: Jun 2005 Location: ドリフト天国 Member #585 My Ride: 06 STI, S13 Silvia, Ruckus iTrader: (3)	I'll double check when I get home, but thier is no slack in the chain and the rest of the head looks fine.. its wierd haha __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. 06 Sti-Built motor....stock turbo 89 S13-aero, Silvia front coupe blah blah blah

06-05-2008, 06:15 PM	#5
omgjacki Tri-State Post Whore Join Date: Sep 2007 Location: Gilbertsville, PA Member #5869 My Ride: 2018 CX-5 GT Premium, 2018 Honda Grom iTrader: (4)	Didn't I hear somewhere that SRs have a knock? I thought someone else said it was pretty common. I'm gonna check. __________________ Ryan M. Sherwood September 9, 1985 - October 7, 2009

06-05-2008, 07:51 PM	#6
180sxDrifter Tri-State Post Whore Join Date: Jun 2005 Location: ドリフト天国 Member #585 My Ride: 06 STI, S13 Silvia, Ruckus iTrader: (3)	I thought the same, but so far nothing has come up in my search's.... I'll check zilvia when I get off work. I'm hopeing its something in the head, I don't feel like pulling the motor __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. 06 Sti-Built motor....stock turbo 89 S13-aero, Silvia front coupe blah blah blah

06-05-2008, 08:07 PM	#7
Renegade_ Tri-State Post Whore Join Date: May 2006 Location: NNJ/NYC Member #1912 My Ride: 1J Swaggon iTrader: (2)	SRs are a tad noisy but they aren't more noisy than subarus at idle... When mine starts up there really isn't any ticking per se but there is injector noise and just general engine racket. Put up a video...